Physics
Scientific paper
Nov 1990
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990ituff..37..535p&link_type=abstract
IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control (ISSN 0885-3010), vol. 37, Nov. 1990, p. 535-542.
Physics
2
Doppler Effect, Electromagnetic Fields, Frequency Standards, Ion Traps (Instrumentation), Mercury (Metal), Metal Ions, Radio Frequencies, Xenon
Scientific paper
The authors have designed and are presently testing a novel linear ion trap that permits storage of a large number of ions with reduced susceptibility to the second-order Doppler effect caused by the RF confining fields. This new trap should store about 20 times the number of ions as a conventional RF trap with no corresponding increase in second-order Doppler shift from the confining field. In addition, the sensitivity of this shift to trapping parameters, i.e., RF voltage, RF frequency, and trap size, is greatly reduced. The authors have succeeded in trapping mercury ions and xenon ions in the presence of helium buffer gas. Trap times as long as 2000 s have been measured.
Dick George J.
Janik Gary R.
Maleki Lute
Prestage John D.
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